Malicious PDF — malware analysis report

Static analysis result for SHA-256 a00e2af9a2cf9ed7…

MALICIOUS

PDF

87.4 KB Created: 2021-07-03 12:16:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-14
MD5: adc2548a9ee1dd8d422ea3356bfe2c92 SHA-1: 6d1522dffc861838ac83a6026f2c4494535f2a10 SHA-256: a00e2af9a2cf9ed740da0c65de3317ee933bc3da35aca9f9e12c7d0306ca32c7
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The document contains numerous embedded URLs, many pointing to compromised CMS uploads or disposable hosting, suggesting it functions as a link farm. The presence of URLs like 'https://ketchas.ru/uplcv?utm_term=how+to+force+hard+reset+iphone' indicates a potential phishing or social engineering lure to drive traffic to malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9952

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • PDF link farm points to compromised-WordPress upload storage medium PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM
    PDF contains multiple clickable links, across many distinct hosts, whose targets are random-slug files parked in the upload directories of vulnerable WordPress form plugins (FormCraft, Super Forms). This is the hallmark of the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains hosted on compromised sites. The PDF itself carries no exploit — the risk is the linked destinations.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • External URI info PDF_URI
    PDF contains an external URL action
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://ketchas.ru/uplcv?utm_term=how+to+force+hard+reset+iphone PDF link annotation
    • https://burkina-businessschool.com/business_school/uploads/file/fijejonamikima.pdfIn PDF document text
    • https://eminencesolutions.in/resources/userfiles/file/bolivasawip.pdfIn PDF document text
    • https://eucolait.eu/userfiles/files/51151813.pdfIn PDF document text
    • https://paloaltospeakerseries.com/wp-content/plugins/super-forms/uploads/php/files/329b6b5f16d4ce46aeab61940eeac8e8/81325829142.pdfIn PDF document text
    • https://agilitynd.com/wp-content/plugins/super-forms/uploads/php/files/7e24716422d5478d4c37e31866f918f3/972457380.pdfIn PDF document text
    • http://photographybynami.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608720d78f381---68195424072.pdfIn PDF document text
    • https://www.mozartcantat.nl/wp-content/plugins/formcraft/file-upload/server/content/files/160b2e96306185---tawugoxe.pdfIn PDF document text
    • https://amesmedicalservices.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609ec019981a1---8856651402.pdfIn PDF document text
    • http://954move.com/clients/4890/File/25358674398.pdfIn PDF document text
    • http://recamonde.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160d9bdc83805a---dugiramazopurubokoz.pdfIn PDF document text
    • https://2greenchicks.com/wp-content/plugins/super-forms/uploads/php/files/bac2949ade2a28b816918a0ca529ab2e/zolagofaxu.pdfIn PDF document text
    • http://bahattinburyan.com/userfiles/file/foxoz.pdfIn PDF document text
    • http://www.hydro-tg.pro/upload/file/zisavosekif.pdfIn PDF document text
    • http://www.sunarozlem.com.tr/wp-content/plugins/super-forms/uploads/php/files/lq1qiv64lptdgtge17ve4k0373/79447674439.pdfIn PDF document text
    • https://fieldofgreen.com/wp-content/plugins/super-forms/uploads/php/files/89d3f6b9ec9a73065979d0047cd21e3f/79489092478.pdfIn PDF document text
    • https://speakingparrot.com/upload/ckfinder/files/67352376421.pdfIn PDF document text
    • https://loan-financial.com/wp-content/plugins/super-forms/uploads/php/files/cc4692108c2b51f06ccbaf6d673a8f9e/korufom.pdfIn PDF document text
    • http://bigsvatcharasith.com/userfiles/file/kemomejasavef.pdfIn PDF document text
    • https://lightsourceindiana.com/wp-content/plugins/super-forms/uploads/php/files/48237faebb36659f04313d49633f250d/6375190633.pdfIn PDF document text
    • https://babamore.com/upload/ckfinder_temp/files/20210601205058.pdfIn PDF document text
    • http://www.miamiairportlimo.net/wp-content/plugins/formcraft/file-upload/server/content/files/1608a09a8acce0---malukejobewiregajejelolaz.pdfIn PDF document text
    • https://tenfci.org/userfiles/file/xekopag.pdfIn PDF document text
    • https://www.idahomedia.com/wp-content/plugins/super-forms/uploads/php/files/320d7d54d0e141a5e856028bebba416e/jumezejimopusotuxugibu.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ef7e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEF7E 18660 bytes
SHA-256: 1d66fd201d8315bf5999be0d4b44ef48f0217deeacfe42a7456cfd3f3368bab0
font_01_sfnt_off00011fb2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11FB2 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off000137c9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x137C9 10748 bytes
SHA-256: 53df3395b4cd9e288c84d11fbfc29bc40af196d4045133f10c19293bd56a351b

Open this report in the interactive analyzer, or submit your own file for analysis.